A mathematical model for predicting the carbon sequestration potential of ordinary portland cement (OPC) concrete
A mathematical model for predicting the carbon sequestration potential of ordinary portland cement (OPC) concrete
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预测普通硅酸盐水泥（OPC）混凝土碳汇潜力的数学模型
DOI：
10.1016/j.conbuildmat.2017.04.133
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发表时间：
2017
影响因子：
7.4
通讯作者：
Srubar, Wil V.
中科院分区：
文献类型：
--
作者：
Souto-Martinez, Adriana;Delesky, Elizabeth A.;Foster, Kyle E.O.;Srubar, Wil V.
提出了一个计算裸露普通硅酸盐水泥(OPC)混凝土理论固碳潜力的简单数学模型，并进行了验证和实施。OPC混凝土通过碳化作用隔离大量二氧化碳(CO2)--这是水泥浆体与大气中的二氧化碳之间的化学反应。该模型由水泥水化和碳化的反应化学组成，考虑了水泥的种类和含量、暴露、时间以及辅助胶凝材料的种类和数量。在用文献数据验证后，该模型用于研究这些因素的影响以及抗压强度和几何形状，即表面积与体积比(SA/V)对裸露混凝土构件总固碳量(KgCO2)的影响。结果表明：(A)低四钙铁铝(C4AF)水泥，(B)抗压强度，(C)高CO2暴露，(D)无SCM，(E)时间，(F)高SA/V比，(G)室内环境增强暴露的OPC混凝土的固着。
A simple mathematical model that calculates the theoretical carbon sequestration potential of exposed ordinary portland cement (OPC) concrete is presented, validated, and implemented herein. OPC concrete sequesters non-trivial amounts of carbon dioxide (CO2)viacarbonation – a chemical reaction between cement paste and atmospheric CO2. Formulated by the reaction chemistries of cement hydration and carbonation, the model accounts for cement type and content, exposure, time, and type and quantity of supplementary cementitious materials (SCMs). Once validated with data from literature, the model is implemented to investigate the effect of these factors and the influence of compressive strength and geometry, namely surface-area-to-volume (SA/V) ratio, on total carbon sequestration (kg CO2) of exposed concrete elements. Results demonstrate that (a) low tetracalcium aluminoferrite (C4AF) cements, (b) compressive strength, (c) high CO2exposure, (d) no SCMs, (e) time, (f) high SA/V ratios, and (g) indoor environments enhance thein situcarbon sequestration of exposed OPC concrete.
影响因子：
11.4
作者：
Steffens, A;Dinkler, D;Ahrens, H
通讯作者：
Ahrens, H
影响因子：
11.4
作者：
Pade, Claus;Guimaraes, Maria
通讯作者：
Guimaraes, Maria